{"id":13940,"date":"2026-09-29T16:00:32","date_gmt":"2026-09-29T14:00:32","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&p=13940"},"modified":"2026-09-30T12:15:37","modified_gmt":"2026-09-30T10:15:37","slug":"oleo-tecnica-butt-weld-counter-flanges-for-metric-pipe","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-butt-weld-counter-flanges-for-metric-pipe\/","title":{"rendered":"Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe"},"content":{"rendered":"

Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe represent an extremely reliable connection solution for industrial hydraulic systems. Designed to ensure leak-tight sealing and a structurally robust connection, these counter flanges integrate seamlessly into hydraulic circuits, providing a deep and durable butt weld. The construction design features a 30-degree welding bevel, specifically engineered to facilitate precise and resistant coupling with metric pipe sections.<\/p>\n

Pressure Specifications and Series<\/h3>\n

The performance and overall dimensions of the counter flanges are structured into two primary variants to accommodate different hydraulic loads. Series 3000 covers a broad dimensional range, starting from 1\/2″ up to 5″. Within this series, the maximum recommended working pressure is 345 Kg\/cm² for the more compact sizes (from 1\/2″ to 1″), then progressively decreases to 276 Kg\/cm² (1″1\/4), 207 Kg\/cm² (from 1″1\/2 to 2″) and reaches 34 Kg\/cm² for the larger sizes (4″ and 5″). For circuits requiring higher pressure containment, Series 6000 – supplied in the 1″1\/2 size – provides a maximum working pressure of up to 414 Kg\/cm². It should be noted that the maximum recommended working pressure is based on the structural limits of the flange itself; the maximum working pressure of the complete system is always determined by the wall thickness and material type of the pipe actually used.<\/p>\n

Construction Features and Materials<\/h3>\n

Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe are manufactured in two main metallurgical options, selectable according to the conveyed fluid and the severity of the operating environment. The standard S355 designation (identified by the GFS prefixes) indicates the use of high-strength structural steel, suitable for most civil and industrial hydraulic applications. For operating conditions with a high risk of corrosion, the counter flanges are available in AISI 316L stainless steel (identified by the GFX prefixes). Component weights increase with nominal diameter, ranging from a minimum of 0.25 kg for 1\/2″ units (Series 3000) up to 4.00 kg for the 5″ version.<\/p>\n

Geometry and Dimensional Tolerances<\/h3>\n

The geometric precision of the counter flanges is essential to ensure perfect alignment with the metric pipe during welding. Dimensional parameters vary according to nominal size to ensure correct stress distribution. For example, the overall thickness and flange dimensions increase proportionally: the centre-distance dimension ranges from 38.10 mm for 1\/2″ models up to 152.40 mm for heavy-duty 5″ sizes. The distance between hole centres is precisely calibrated to match dimensional standards, ensuring safe interchangeability and even distribution of screw clamping loads while preventing distortion.<\/p>\n

Fastening and Hole Options<\/h3>\n

To simplify assembly, the counter flanges can be ordered with different hole standards while maintaining the same primary geometric profiles. The units feature metric threaded fastening holes (identified by the SRE\/STRE designations), supporting screws from M8 up to M16 depending on the counter flange diameter. Alternatively, to suit international machinery and systems or specific project requirements, they are available with UNC threaded fastening holes (SREU\/STREU designations), sized for screws from 5\/16″ up to 5\/8″.<\/p>\n

Summary technical table of the main characteristics of Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Feature<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Available Series<\/td>\nSeries 3000, Series 6000<\/td>\n<\/tr>\n
Base Materials<\/td>\nS355 Steel, AISI 316L Steel<\/td>\n<\/tr>\n
Series 3000 Sizes<\/td>\nFrom 1\/2″ to 5″<\/td>\n<\/tr>\n
Series 6000 Sizes<\/td>\n1″1\/2<\/td>\n<\/tr>\n
Max. Pressure (Series 3000)<\/td>\nUp to 345 Kg\/cm²<\/td>\n<\/tr>\n
Max. Pressure (Series 6000)<\/td>\n414 Kg\/cm²<\/td>\n<\/tr>\n
Fastening Hole Type<\/td>\nMetric (M8 – M16) or UNC (5\/16″ – 5\/8″)<\/td>\n<\/tr>\n
Welding Bevel Angle<\/td>\n30°<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Product Codes<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Base Model (S355 Steel, Metric)<\/th>\nSize<\/th>\nMax. Pressure (Kg\/cm²)<\/th>\nWeight (Kg)<\/th>\nMetric Thread<\/th>\nEquivalent UNC Thread<\/th>\n<\/tr>\n<\/thead>\n
GFS080SRE20<\/td>\n1\/2″<\/td>\n345<\/td>\n0.25<\/td>\nM8<\/td>\n5\/16″<\/td>\n<\/tr>\n
GFS080SRE22<\/td>\n1\/2″<\/td>\n345<\/td>\n0.25<\/td>\nM8<\/td>\n5\/16″<\/td>\n<\/tr>\n
GFS100SRE28<\/td>\n3\/4″<\/td>\n345<\/td>\n0.39<\/td>\nM10<\/td>\n3\/8″<\/td>\n<\/tr>\n
GFS102SRE35<\/td>\n1″<\/td>\n345<\/td>\n0.45<\/td>\nM10<\/td>\n3\/8″<\/td>\n<\/tr>\n
GFS104SRE42<\/td>\n1″1\/4<\/td>\n276<\/td>\n0.69<\/td>\nM10<\/td>\n7\/16″<\/td>\n<\/tr>\n
GFS106STRE48<\/td>\n1″1\/2<\/td>\n207<\/td>\n1.05<\/td>\nM12<\/td>\n1\/2″<\/td>\n<\/tr>\n
GFS108STRE60<\/td>\n2″<\/td>\n207<\/td>\n1.22<\/td>\nM12<\/td>\n1\/2″<\/td>\n<\/tr>\n
GFS110STRE76<\/td>\n2″1\/2<\/td>\n172<\/td>\n1.63<\/td>\nM12<\/td>\n1\/2″<\/td>\n<\/tr>\n
GFS112STRE88<\/td>\n3″<\/td>\n138<\/td>\n2.42<\/td>\nM16<\/td>\n5\/8″<\/td>\n<\/tr>\n
GFS116STRE114<\/td>\n4″<\/td>\n34<\/td>\n2.94<\/td>\nM16<\/td>\n5\/8″<\/td>\n<\/tr>\n
GFS118STREH139<\/td>\n5″<\/td>\n34<\/td>\n4.00<\/td>\nM16<\/td>\n5\/8″<\/td>\n<\/tr>\n
GFS405SRE60 (Series 6000)<\/td>\n1″1\/2<\/td>\n414<\/td>\n1.76<\/td>\nM16<\/td>\n5\/16″<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n","protected":false},"excerpt":{"rendered":"

Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe provide high performance for high-pressure hydraulic connections. Available in Series 3000 and 6000 and manufactured in S355 structural steel or AISI 316L stainless steel, these components support maximum working pressures up to 414 Kg\/cm\u00b2. Equipped with metric or UNC fastening holes, they ensure maximum dimensional stability. The available product codes are: GFS080SRE20, GFS080SRE22, GFS100SRE28, GFS102SRE35, GFS104SRE42, GFS106STRE48, GFS108STRE60, GFS110STRE76, GFS112STRE88, GFS116STRE114, GFS118STREH139, GFS405SRE60.<\/p>\n","protected":false},"featured_media":13708,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[496,106,493],"product_tag":[327],"class_list":{"0":"post-13940","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-butt-weld-flanges","7":"product_cat-flanges","8":"product_cat-sae-j518","9":"product_tag-oleo-tecnica","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"yoast_head":"\nOleo Tecnica Butt-Weld Counter Flanges for Metric Pipe - LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Oleo Tecnica Series 3000 and 6000 Butt-Weld Counter Flanges for Metric Pipe in S355 and 316L ensure reliable sealing for pressures up to 414 Kg\/cm\u00b2.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-butt-weld-counter-flanges-for-metric-pipe\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe\" \/>\n<meta property=\"og:description\" content=\"Oleo Tecnica Series 3000 and 6000 Butt-Weld Counter Flanges for Metric Pipe in S355 and 316L ensure reliable sealing for pressures up to 414 Kg\/cm\u00b2.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-butt-weld-counter-flanges-for-metric-pipe\/\" \/>\n<meta property=\"og:site_name\" content=\"LubeTeam Hydraulic\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/lubeteam\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-30T10:15:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/lubeteam.it\/wp-content\/uploads\/2026\/09\/CONTROFLANGE-A-SALDARE-DI-TESTA-TUBO-METRICO.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-butt-weld-counter-flanges-for-metric-pipe\/\",\"url\":\"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-butt-weld-counter-flanges-for-metric-pipe\/\",\"name\":\"Oleo Tecnica Butt-Weld Counter Flanges for Metric Pipe - 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